[Elecraft] Remoting KAT500 to base of antenna

[Edward R Cole]

At the risk of repeating myself, I do not use any mesh covering vent 
holes on enclosures that are above ground level (at least a few 
feet).  I've not had any intrusion of "critters" and we have wasp 
nests which seem to prefer underside of roof eves. I'm guessing the 
wildlife have plenty of alternative "homes" here at the edge of 
wilderness to bother with RF exposure! ;-)

I used ordinary window screen material in the bottom 4-inch diameter 
vent holes of my PS enclosure at my dish as the fans draw air into 
the box from a plenum area below and that is definitely spider and 
bug haven.  Exhaust vent is similarly screened.
http://www.kl7uw.com/DishPS_11.jpg
http://www.kl7uw.com/DishPS_09.jpg
http://www.kl7uw.com/DishPS_02.jpg
http://www.kl7uw.com/DishPS_03.jpg

In my amplifier boxes fans move air thru vents and heated air from 
high power equipment keeps condensation free in the interior if I run 
equipment often enough.  I do use stainless steel hardware which 
inhibits corrosion.

I have two Hoffman style boxes at the dish and three on the 2m-eme 
tower Hazer.  Except for the 2m-eme preamp/relay box all have 
amplifiers providing air heating.
http://www.kl7uw.com/1296PA_enclosure_1.jpg
http://www.kl7uw.com/2m-eme%20lowered.jpg

73, Ed - KL7UW
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